Azimuthal angle decorrelations of jets widely separated in rapidity in pp collisions at sqrt{s} = 7 TeV

Collaboration
2013
18 pages
Report number:
  • CMS-PAS-FSQ-12-002
Experiments:

Citations per year

20132014201520162017051015
Abstract:
The azimuthal angle decorrelations of jets most forward and backward in rapidity (Mueller-Navelet jets) are measured with data collected in pp collisions with the CMS detector at the LHC at s=7\sqrt{s} = 7 TeV. The azimutal angle distributions, average cosines of the difference in azimuthal angle between Mueller-Navelet jets, and ratios of the cosines are measured for jets with pT>35p_{\mathrm{T}} > 35 GeV and y<4.7\vert y \vert < 4.7. The results are presented as a function of the rapidity separation Δy \Delta y between jets, reaching a Δy \Delta y up to 9.4 for the first time. The results are compared to predictions of various Monte-Carlo event generators and analytical predictions based on the DGLAP and BFKL parton evolution schemes. The measurements are also used to investigate effects of parton showering and multiparton interactions.
Note:
  • Preliminary results
  • Data
  • jet: hadroproduction
  • p p: scattering
  • rapidity: gap
  • Monte Carlo
  • parton: showers
  • DGLAP equation
  • CERN LHC Coll
  • BFKL equation
  • CMS